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CVE-2026-72690— Attendize Attendize - Cross-Tenant Authorization Bypass

Quick assessment

Affected
Attendize Attendize
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Attendize是Attendize组织的一款活动票务管理平台。 Attendize 9289acb提交及之前版本存在授权问题漏洞，该漏洞源于授权不当，导致跨租户写入，经过身份验证的远程攻击者可通过POST /event/{event_id}/question/create端点向其他组织者的事件注入持久强制性调查问题。

CVSS 5.4 · High EPSS 0.41% · P33

Affected Version Matrix 1

VendorProduct Version RangeStatus
Attendize Attendize ≤ 9289acb affected
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I. Basic Information for CVE-2026-72690

Vulnerability Information
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Vulnerability Title
Attendize Attendize - Cross-Tenant Authorization Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
An improper authorization vulnerability in Attendize through commit 9289acb allows an authenticated remote attacker to inject persistent mandatory survey questions into another organizer's events via the POST /event/{event_id}/question/create endpoint. The postCreateEventQuestion method loads the target event without the tenant-isolation scope, enabling cross-tenant writes; the injected question cannot be removed by the victim because the victim's account-scoped delete path cannot resolve a question owned by another tenant.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
Attendize 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Attendize是Attendize组织的一款活动票务管理平台。 Attendize 9289acb提交及之前版本存在授权问题漏洞，该漏洞源于授权不当，导致跨租户写入，经过身份验证的远程攻击者可通过POST /event/{event_id}/question/create端点向其他组织者的事件注入持久强制性调查问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Attendize Attendize 0 ~ 9289acb -

II. Public POCs for CVE-2026-72690

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III. Intelligence Information for CVE-2026-72690

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Vendor Pages for CVE-2026-72690 (1)

IV. Related Vulnerabilities

Same product: Attendize
Same vendor: Attendize
Same weakness: CWE-639

V. Comments for CVE-2026-72690

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